Mixing-machine.



T; L. BRANNEN I v MIXING MACHINE.

APPLIUATION FILED JUNE 2'], 1910.

Patented Mar. 28, 191.1. 7

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MIXING-MACHINE.

Specification of Letters Patent.

Patented Mar. 28, 1911.

Application filed June 27, 1910. Serial No. 569,142.

T all whom it may concern:

Be it known that I, THOMAS L. BRANNEN, residing at Berlin, in the countyof Coos and State of New Hampshire, have invented certain new and usefulImprovements in Mixing-Machines, of which the following is aspecification.

My invention relates to certain new and useful improvements in mixingmachines particularly designed for use in the art of manufacturing paperto mix the different kinds of stock, sizing, alum, clay and colortogether.

In its generic nature the invention resides in providing-a mixingmachine consisting of a tank in which a hollow open ended cylinderrevolves, and including means for elfecting a circulation of thecontents of the easing or tank through the cylinder and in a spiral patharound the cylinder.

More specifically my invention resides in providing a tank in which ahollow open ended cylinder rotates, the cylinder being of a less lengththan the tank so as to be spaced from the ends thereof and the tank andcylinder being provided with means which cause the contents of the tankto circulate in a spiral path around the inside of the tank between itand the cylinder and then through the cylinder back to the outside ofthe cylinder during the rotation of such cylinder.

In its more subordinate nature, the invention also includes those noveldetails of construction, combination and arrangement of parts, all ofwhich will be first fully described in detail, then be specificallypointed out in the appended claims and illustrated in the accompanyingdrawings, in which:

Figure 1, is a central vertical section and part elevation of myinvention. Fig. 2, is a top plan view thereof. Fig. 3, is a detailperspective view on a reduced scale of the rotatable cylinder. Fig. 4 isa detail perspective view of the bail clamp.

Referring now to the accompanying drawings, in which like letters andnumerals of reference indicate like parts in all of the figures 1designates the tank which is built up of staves 1- secured into acylindrical form by bails 1 that are secured together at their ends bynuts 1 and connections or clamps 1 as best shown in Figs. 2 and 4t ofthe drawings. The tank 1 also includes a bottom 1 which may be supportedon a cradle formed of longitudinal beams 13 and cross beams 12, as bestshown in Figs. 1 and 2 of the drawings.

Within the tank 1 is a series of wings, blades or paddles 2 that aresecured to the inner walls of the tank and held in a spiral direction tocooperate with similarly formed wings, paddles or blades 11 that arecarried on the outside of a cylinder which is rotatably mounted withinthe tank 1 on a shaft 9 whose upper end is held in a bearing 4 on thecross beam 3 that projects across the top of the tank and whose lowerend is projected through the bottom 1 of the tank and receives themaster drive gear which meshes with a pinion 16 on a power shaft 17, theshaft 17 having a bearing 18, as shown.

The shaft 9 has its lower end held in a stepped bearing 14 and passesthrough a stufling box 15 in the bottom 1. The bottom 1 carries a thrustbearing box 6 in which the balls 8 are held, a cap bearing member 7fitting over the balls 8 and closing the box 6 is secured to the shaft9, see Fig. 1.

The drum or cylinder 10 is built up of staves 1O similarly to the casing1, the staves being secured together by bands 10 and the cylinder 10 isheld on the shaft 9 by spiders 10 whose bearings 10 are secured to theshaft 9 in any approved way.

In operation the material to be mixed is placed into the tank and theshaft 9 turned through any suitable driving mechanism (such asthat shownin the drawings) to turn the cylinder or drum 10 in the direction of thearrow as in Fig. 1. This causes the pulp within the tank 1 to efiect arotary motion in the tank, the wings, paddles or blades 2 and 11 servingto force the pulp downwardly between the drum or cylinder 10 and thetank 1 in the direction of the arrow y and at the same time force thepulp up through the drum 10 in the direction of the arrow .2 to cause acirculation to take place within the tank in the direction of the arrowsy and z and at the same time the circulating pulp is put into rotarymotion.

I have constructed and used my invention for practical purposes and findthat with a machine constructed as shown in the drawings, the stockwithin the tank will be forced downwardly on the outside of the cylinderor drum in a spiral direction and upwardly through the inside of thecylinder or drum. I find that in practice the stock travels in a spiralform about twice around the tank bemalls fore it starts up through thecylinder or drum. 1 have also found from practical tests that themachine is etlicient lll'dtS operation and will mix any kind of stock,the centrifugal force throwing the stock outwardly from the cylinder ordrum 10 and distributing it around the tank so that when the color isput in it mixes very rapidly.

From the foregoing description taken in connection with the accompanyingdrawings, it is thought the complete construction, operation andadvantages of my invention will be readily understood by those skilledin the art to which the invention appertains and I desire to say furtherthat slight changes in the details of construction and the manner ofdriving the shaft 9 may be readily made.

lVhat I claim is:

1. A mixing machine comprising a tank, acylinder open at both ends androtatable within said tank, said cylinder being spaced from the bottomof said tank, spirally arranged paddle blades mounted on the outside ofsaid cylinder members mounted on the inside of said tank to cooperatewith said paddle blades to effect a circulation of the contents of saidtank in a spiral path around said cylinder and then longitudinallythrough said cylinder.

2. A mixing machine comprising a tank, a hollow open ended cylinderrotatable in said tank and of less length than the tank, means carriedby said cylinder and means carried by said tank for effecting acirculation of the contents of said cylinder and tank around and throughsaid cylinder.

3. ii mixing machine comprising tank, an open ended hollow cylinderrotatable in said tank and spaced from the walls of said tank, meanscarried by said tank and means carried by said cylinder in virtue ofwhich as said cylinder turns the contents of said tank and cylinder willbe forced to circulate in a spiral path around said cylinder and thenthrough said cylinder.

4-. A mixing machine comprising a tank, an open ended hollow cylinderrotatable in said tank and spaced from the walls of said tank meanscarried by said tank and means ca ried by said cylinder in virtue ofwhich as said cylinder turns the contents of said tank and cylinder willbe forced to circulate in a spiral path downward and around saidcylinder and then upwardly through said cylinder.

5. A mixing machine comprising a tank, an open ended cylinder rotatablewithin said tank and spaced from the bottom of the same, spirallyarranged paddles mounted on the outside of said cylinder, spirallyarranged paddles mounted on the inside ofv said tank, means for turningsaid cylinder whereby said paddles will force the contents of said tankdownwardly between said tank and said cylinder and upwardly through saidcylinder while imparting a rotary motion to said contents, substantiallyas shown and described.

6. In a mixing machine, a tank of cylindrical :lorm having a closedbottom, a rotatable shaft longitudinally mounted in said tank, spiderframes carried by said shaft, a cylinder carried by said spider frames,said cylinder being of less length than said tank whereby the ends ofsaid cylinder will be spaced from the ends of said tank, means foreffecting rotation of said shaft to turn said cylinder, members on saidcylinder for forcing the contents of said tank to circulate in saidtank, means in said tank cotiperating with said cylinder members toassist in causing the material in said tank to circulate as saidcylinder is turned, said circulation causing members and means servingto effeet a circulation of the material. longitudinally through thecylinder and around the cylinder between the cylinder and the tank.

THOl /lAS L. BRANNEN.

lVitnesses EDMUND SULLIVAN, GERALDA SHAW.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

